Entry Distribution, Fission Barrier, and Formation Mechanism of N{sup 254}{sub 102}o

Journal Article · Mon Apr 17 00:00:00 EDT 2000 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.84.3542· OSTI ID:20216134

Reiter, P ^[1]; Khoo, T L ^[1]; Lauritsen, T ^[1]; Lister, C J ^[1]; Seweryniak, D ^[1]; Sonzogni, A A ^[1]; Ahmad, I ^[1]; Amzal, N ^[2]; Bhattacharyya, P ^[3]; Butler, P A ^[2]

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1. Argonne National Laboratory, Argonne, Illinois 60439 (United States)
2. University of Liverpool, Liverpool L69 7ZE, (United Kingdom)
3. Purdue University, West Lafayette, Indiana 47097 (United States)

The entry distribution in angular momentum and excitation energy for the formation of {sup 254}No has been measured after the {sup 208}Pb( {sup 48}Ca, 2 n) reaction at 215 and 219 MeV. This nucleus is populated up to spin 22({Dirac_h}/2{pi}) and excitation energy (greater-or-similar sign)6 MeV above the yrast line, with the half-maximum points of the energy distributions at {approx}5 MeV for spins between 12({Dirac_h}/2{pi}) and 22({Dirac_h}/2{pi}) . This suggests that the fission barrier is (greater-or-similar sign)5 MeV and that the shell-correction energy persists to high spin. (c) 2000 The American Physical Society.

• OSTI ID: 20216134
• Journal Information: Physical Review Letters, Vol. 84, Issue 16; Other Information: PBD: 17 Apr 2000; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
LEAD 208 TARGET
CALCIUM 48 REACTIONS
NEUTRONS
NOBELIUM 254
SPIN
FISSION BARRIER
EXPERIMENTAL DATA